Method of recovering values from by-products and ores.



' Merion, in the count UNITED s'rATns JOHN J. BOEEICKIE, 0F MERION, PENNSYLVANIA.

'METHOD OE REGOVERING VALUES FROM BY-PRODUCTS AND GEES.

Specification of Letters Patent.

Patented Mar. 19,1918.

no Drawing. Application filed July 20, 1914, Serial No, 851,888, Renewed August 7, 1917. Serial No.

To all whom it may concern:

Be it known that I, JOHN J. BOERICKE, a citizen. of the United States, residing at of Montgomery and State of Pennsylvania, have invented certain new and useful Improvements in Methods of Recovering Values from B -Products and Ores, of which the following is a specification;

This invention has reference to the recovery of values from lay-products and from ores, and it has particular reference to the recovery of values usually lost in carrying out the reduction of the rarer metals and their alloys from their ores and oxids by 7 what is known as the alumino-thermic 7 products containing. the reducible product.

. By way of illustration, in the, reduction of vanadium from vanadium ores, I have found that "the slag which is formed in the crucible during the reduction and which is form of V 0, is contained in the fumes or vapors, and I carry 0d the vapor by a pipe or other suitable means in which it is cooled and condenses in the form of a powder-like deposit. I collect this deposit and fuse or roast it with a flux, such as an alkali or an alkaline salt, which will combine with the values to be recovered, and which, when so combined, will form a compound soluble in water. The resulting roasted or fused prod.- uct is then lixiviated, that is, leached with water. The solution is drawn ofi and brought to a neutral or a nearly neutral condition, by the addition of an acid, such for example, as hydrochloric acid, and from this solution the values are precipitated by means of chlorinated lime, calcium hypochlorite or equivalent precipitant. The precipitate so obtained and recovered is then dried and reduced by any of the well known processes.

In the case of slag containing values to be recovered, the slag 1s usually broken up and roasted or fused in the manner just above described, after which the process is the usually rejected, contains a percent: ge ofering vanadium values which consists in vanadium sufliciently hivh to warrant its re covery. The vapor which has formed during the reduction also contains vanadium usually in the form bf V 0 .in reducible quantities. In the treatment of certain vanadium bearing ores in an ogzidizin roast preparatory to redudtion by the t ermic process a certain percentage remains in the waste products which is usually thrown away.

My improved method has in view the recovery of .values lost insuch wastes asjust above indicated, and as the method is practically the same in each case, I shall deroasting the material containing the values with an alkali to form a compound soluble in water, in leaching the compound, in bringing the solution to a substantialfy neutral condition, and then in precipitating the values from the resulting solution, by means of chlorinated lime. if

2. The herein described process of recovering vanadium values which consists in roasting the material containing the values with an alkali to form a compound soluble in water, in leaching the compouhd, in bringing the solution to a substantially neutral condition, and than in'precipitating the BEST AVAlLABLE COP values from the resulting solution by means of oaloium hypo-ohlorito.

3. The herein described process of reo0voring vanadium values from vanadiferous fumes which consists in condensing the fumesin roasting the deposit With a flux forming a compound soluble in water; in

leaching the compound, in neutralizing the solution, and then in precipitating the JOHN J. BOERICKE. Witnesses i L. A. MYERS, ARTHUR SYNNESTVEDT. 

